Abstract

ABSTRACKThis research was conducted in April - May 2018 at Fish Breeding Laboratory of Fisheries and Marine Faculty, University of Riau. The aim was to see the effect of different feed combinations on the growth of gouramy (Osphronemus gouramy Lac.) larvae. The method used in this study is the experimental method using a completely factor randomized design (CRD) and six treatments with three replications. The treatments applied in this study are: P1 = Giving Tubifex sp on the 1st-10th day + Moina sp on 11st-20th day + boiled chicken egg yolk on 21st-30th day + shrimp pellets on 31st-40th day. P2 = Giving Tubifex sp on the 1st-10th day + boiled chicken egg yolk on 11st-20th day + Moina sp on 21st-30th day + shrimp pellets on 31st-40th day. P3 = Giving Tubifex sp on the 1st-10th day + shrimp pellets on 11st-20th day + Moina sp on 21st-30th day + boiled chicken egg yolk on 31st-40th day. P4 = Giving Tubifex sp on the 1st-10th day + Moina sp on 11st-20th day + shrimp pellets on 21st-30th day + boiled chicken egg yolk on 31st-40th day. P5 = Giving Tubifex sp on the 1st-10th day + boiled chicken egg yolk on 11st-20th day + shrimp pellets on 21st-30th day + Moina sp on 31st-40th day. P6 = Giving Tubifex sp on the 1st-10th day + shrimp pellets on 11st-20th day + boiled chicken egg yolk on 21st-30th day + Moina sp on 31st-40th day. The results showed that the best combination of feed for the growth of gouramy larvae are P4, with absolute weight growth 0,26 g, specific growth rates 5,67%, absolute length growth 3,23 cm, and survival rate 76,67%. Temperatures range from 26-29oC, pH 6.4-7.1 and Dissolved Oxygen 4.2-5.2 mg/L. Keywords: Feed combination, Larvae, Guramy (Osphronemus gouramy Lac)

Abstract

ABSTRACT This research aimed to determine the effect of substitusion of Tubifex sp. with artificial food on growth and survival rate of Lele Mutiara larvae. This research was conducted from November 2018 - January 2019 at Fish Hatchery and Breeding Laboratory, Fisheries and Marine Science Faculty of Riau University. The method used is an experimental method with a Completely Randomized Design (CRD) with four treatments and three replications. The treatments were P1 (Tubifex sp. 40 days), P2 (Artificial Food 40 days), P3 (Tubifex sp. 30 days + Artificial Food 10 days), P4 (Tubifex sp. 20 days + Artificial Food 20 days), and P5 (Tubifex sp. 10 days + Artificial Food 30 days). The subjects used in this research were 4 day old Lele Mutiara larvae. The research process was conducted by raising Lele Mutiara larvae in an aquarium containing 15 liters of water with a stocking density of 2 fish/liter for 40 days. Frequency of feeding that conducted was four times a day as much as 50% of the weight of biomass. The result showed that P3 (Tubifex sp. 30 days + Artificial Food 10 days) was the highest growth (2,20 g, 6,27 cm, and 16,79%/day), the best feed efficiency was 58,23%, and the highest survival rate was 92,22%. Keywords :Lele Mutiara Larvae;Tubifex sp., Artificial Food,Survival Rate

Abstract

The research was conducted on April to June 2016 in Aquaculture Technology Laboratory, Nutrition, Parasite Laboratorory and Fish Disease of Fisheries and Marine Science Faculty of Riau. Its was aimed to analyze the very good vitamin C APM increasing on feed of the body resistence resolve stress and growth catfish (Hemibagrus nemurus). The method used by experimental method, with completely randomized design (CRD) with four treatments and last three post treatments. The treatment of the research used doses of vitamin C APM (Magnesium L-Ascorbyl-2 Phosphate) that was without vitamin C APM, doses of vitamin C 500 mg/kg feed, doses of vitamin C 1.000 mg/kg feed, doses of vitamin C 1.500 mg/kg feed. Based on the research results on vitamin C APM increasing showed that vitamin C APM doses is 1.000 mg/kg feed gives the very good effect of the body resistence resolve stress of catfish (H. nemurus)

Abstract

This study was conducted at fish breeding and hatchery laboratory ofFisheries and Marine Science Faculty, University of Riau. Mature female ofselais fish used in the study were between 45-50 g body weight and male fishwere between 44-55 g body weight. Study method used in the study wasexperimental method,while data was analised by descriftive method. Theresultsof the study show that the highest percentage of fertilized eggs found on thetreatment of D0, 3W7 (fish injected with sGnRH + Domperidon 0,3 ml/kg andlaten time of 7 hours), and the highest percentage of eggs hatch was found on thetreatment of D0,5W8 and D0,7W6. However, treatment without injection withsGnRH + domperidon was no single fish was ovulated. Water quality duringexperiment was always in good condition for living.Keywords: Ompok rhadinurus Ng, sGnRH + Domperidon, ovulation. fertilizedeggs, laten time.

Abstract

The research was conducted in June 2014 in the Fish Hatchery and Breeding Laboratory of the Fisheries and Marine Sciences Faculty University of Riau. The research was to determine the effect of ovaprim on ovulation and egg quality of ingir-ingir (Mystus nigriceps). The method used is an experimental method with a completely randomized design (CRD) with four treatments and three replications. Treatment in this study were P0 (NaCl 0,9% dose of 1 ml / kg body weight) P1 (ovaprim dose of 0,5 ml / kg body weight) P2 (ovaprim dose of 0,7 ml/ kg body weight) and P3 (dose ovaprim 0,9 ml / kg body weight).The results of the research showed that the ovaprim doses 0.7 ml / kg body weight gave the optimum result inter of latent period (6,37 hours), number of egg striping (315 eggs / gram broodstock), increase the diameter eggs (0,038 mm) and percent increase egg maturation (14,3%), and the ovisomatik index (9,85%).Keywords: Ovaprim doses, Ovulation, Ovisomatik indeks and egg quality

Abstract

Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â AbtrakThis research was conducted from April to June 2017 at Fish Hatchery and Breeding Laboratory, Faculty of Fisheries and Marine, University of Riau. The aim of this research is to know the effect of natural feed change of Artemia sp with Tubifex sp to growth and survival of fresh tambaqui (Colossoma macropomum) which maintained by water recirculation system. The method used in this study is an experimental method with Completely Randomized Design (RAL) with one factor, five treatments and three repetitions. The treatments in this study were P1 is giving of Artemia sp for 7 days and Tubifex sp for 33 days, P2 is giving of Artemia sp for 14 days and Tubifex sp for 26 days, P3 is giving Artemia sp for 21 days and Tubifex sp for 19 days, P4 is giving of Artemia sp for 40 days and P5 is giving of Tubifex sp for 40 days. Parameters measured is absolute weight growth, absolute long growth, daily weight growth rate and survival. The results showed that the best change of feed treatment was on P1 with absolute weight growth was 3.17 grams, absolute long growth was 4.87 cm, daily weight growth rate was 18.83 % / day and the survival rate was 97.78%.Keywords: Tubifex sp, Artemia sp, growth and survival of (Colossoma macropomum)